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minimerlin
08-15-2012, 08:45 PM
I have still got problems on one of these units. It has always done this and needs to have the transfer belt cleaning unit vacumed out about once every 3/4 weeks. The complete chute unit has been replaced and the belt assembly changed to the latest type..with a longer auger with what seem to be a couple of additional protrusions on it at the exit, bit the problem still occurs. The chute is never blocked up just the exit of the cleaner! Firmware is D2. Before I turn it into a boat anchor I wondered if anyone had a fix?:confused:

EarthKmTech
08-15-2012, 11:31 PM
what are the power save settings set to ?

the transfer belt periodically rotates at idle, any environmental dust that settles on it (due to the fans in the machine running) will settle on it and end up in the cleaning section and potentially causing a clog. There is some truth to the BS KM released about it being caused by carpet fibers, but its not only carpet fibers that will do it.

Everyone one that ive had it happen to have been low volume machines, once setting low power to 30 minutes and sleep to about 180 they've never come back in again. Prior to changing those settings they were coming in once a month resulting in some agro customers. The power save settings used to be set to 240 low power and never go to sleep. I put a stop to that.

Also make sure the waste toner box clips are not loosely holding the box in, if required bend them in a bit so they most positively snap onto the box when its inserted. If the box is able to come out on the left side you will get a blockage in no time also.

make double certain the chute is mounted correctly and isnt blocked at the top as this is where the problem starts, the transfer belt is a symptom of the problem, not the cause.

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08-15-2012, 11:38 PM
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AyJayAreDii
08-16-2012, 12:13 AM
what are the power save settings set to ?

Everyone one that ive had it happen to have been low volume machines, once setting low power to 30 minutes and sleep to about 180 they've never come back in again. Prior to changing those settings they were coming in once a month resulting in some agro customers. The power save settings used to be set to 240 low power and never go to sleep. I put a stop to that.
.

I have never seen this on any of our machines, but most our machine are set to very low power settings. 10 mins low power and 20 mins sleep is about normal for our machines.

EarthKmTech
08-16-2012, 09:58 AM
I have never seen this on any of our machines, but most our machine are set to very low power settings. 10 mins low power and 20 mins sleep is about normal for our machines.

there's your answer :cool:

minimerlin
08-16-2012, 08:12 PM
there's your answer :cool:Thanks for the input, but the energy settings are already 15 mins for low power and 30 for sleep! The unit is quite well used with a lot of different users on secure print mode. I was at this machine today for the usual noise of clicking transfer belt gears, as usual the top of the chute was slightly clogged and the transfer cleaner exit was all clogged! My theory is that the chute top is too small and gets partly closed off by the sponge seal as the belt is slid in. I can never understand why such a pathetic design was used!

EarthKmTech
08-16-2012, 09:20 PM
I agree that the design is indeed crap, even the box opening is at such an extreme angle that blockage is easy, so they had to add a paddle to get the stuff moving.

fortunately I've had no returns on the ones I've done to date, your machine may just be in an environment that promotes this particular issue.

is it dusty or experiencing extremes of temperature or humidity ?

What kind of printing are they doing ?

the caked toner in the chute may need to be examined under a microscope to see if any airborne particulate is being mixed in with it. Not that you'll be able to do much about it anyway.

one thing i can say is that I've 2 machines right next to each other at one install. one has had the issue and the other never. The environment is clean and tiled without carpet. Could even be the paper now that i think of it. the machine that did it was used to print letterheads and the other one was not. The one thats used for letterheads also gets some purple coloured non toner buildup in the fusing unit, presumably from the letterhead.

minimerlin
08-16-2012, 11:35 PM
My C220 is in the same room as a C360, and yes the 360 runs with no problems...as yet! I did notice today that for some reason the transfer roller on the 220 is not coated with yellow toner like the 360 one is! I wonder why not? I am going to a C280 in the morning..so will see what it is doing. This troubled C220 is the only one I have that has the problem, so I just am wondering what to do about it.:(

blackcat4866
08-17-2012, 12:50 AM
They all come primed in the yellow toner. It just depletes over time and prints.

Bizhub
08-23-2012, 08:22 PM
We have had loads blocking up, tried antistatic tapes etc but to no avail.
Now Katun have launched the toner so hopefully the problem will go away with pulverised toner !!!

brent
08-24-2012, 02:48 AM
I would never use generic toner. I learned my lesson on that one. a thought about the low power and sleep mode. isnt it kind of a toss up
to put the low power and sleep to such a low setting? I am at class this week (C360) and we discussed that by putting the machine to sleep and low power so often. it adds a lot of time to the consumable clocks. and they don't last as long. but i guess as long as there is not toner building up because of those settings being activated. I guess it is ok. thoughts?

brent

suomi
08-24-2012, 01:40 PM
Subject : Noise from Waste toner collecting section
of image transfer belt unit

<Phenomenon>
Waste toner collecting section of image transfer belt unit is clogged with waste toner, and noise is produced
from waste toner collecting section or drive section of image transfer belt unit.

This issue may occur depending on installation environment.
Fiber mixes in waste toner in the environment carpeted on floor, and fiber is the cause of clogging waste
toner.

<Countermeasure>
The screw of waste toner collecting section is modified for increasing in performance of waste toner
discharge in image transfer belt unit.

<Production application schedule>
This change will be applied on mass-production machines in March.
<Corrective action>

If noise is produced from image transfer belt unit, image transfer belt unit may be clogged with waste toner,
so replace image transfer belt unit.
If image transfer belt unit is clogged with waste toner, waste toner pipe may be clogged too, so check it too.

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